Decision-Making Biases

Anchoring Bias

Definition

Anchoring bias is the tendency to rely too heavily on the first piece of information encountered (the "anchor") when making judgments or decisions. Even when the anchor is irrelevant or arbitrary, it strongly influences subsequent evaluations.

Once an anchor is set, people tend to adjust away from it insufficiently.

Real-world example

A classic example comes from negotiations and pricing:

In salary negotiations, the first number mentioned often sets the tone for the entire discussion. If an employer opens with a low offer, final outcomes tend to be lower than if the employee had anchored the conversation with a higher initial request—even when both sides have access to the same market data.

Anchoring is also widely used in consumer contexts: • A product labeled "Was $499 – Now $299" feels like a bargain, even if $299 is objectively expensive. • Menus that list very expensive items first make other options seem more affordable by comparison.

Supplementary perspective

Anchoring bias is closely linked to adjustment bias: once an anchor is established, people make adjustments from that starting point—but typically not enough.

The effect is stronger under: • uncertainty • time pressure • lack of clear reference points

This makes anchoring especially powerful in novel, complex, or emotionally charged decisions.

Practical advice

Recognize

—Notice whether a number, suggestion, or first impression quickly becomes your mental reference point.
—Ask whether your judgment would change if the order of information were reversed.

Counteract

—Delay judgment until multiple independent data points are available.
—Set your own benchmarks before reviewing others' proposals.
—Ask: "What would I think if I had never seen this initial value?"

Ethical use

—Present realistic, fair anchors in negotiations, communication, and design.
—Use anchors to support understanding and orientation—not to manipulate.